Answer: Option (2) is the correct answer.
Explanation:
Activation energy is the minimum amount of energy required to start or initiate a chemical reaction.
Whereas a catalyst helps in increasing the energy of reactant molecules so that they can overcome activation energy barrier and actively participate in the reaction.
Hence, adding a catalyst to a chemical reaction results in a decrease in activation energy and an increase in the reaction rate.
Adding a catalyst to a chemical reaction results in a decrease in activation energy and an increase in the reaction rate, as catalysts speed up chemical reactions by lowering the required activation energy. The correct answer to the given question is option (2) a decrease in activation energy and an increase in the reaction rate
In the world of Chemistry, a catalyst is a substance that increases the speed of a chemical reaction without itself undergoing any permanent chemical change. It achieves this acceleration by lowering the activation energy required for the reaction to occur. Therefore, adding a catalyst to a chemical reaction results in a decrease in activation energy and an increase in the reaction rate (option 2).
The activation energy is the minimum amount o f energy required for a chemical reaction to proceed. By lowering this energy barrier, a catalyst allows the reaction to proceed more quickly, in other words, it increases the rate of the reaction.
The correct answer to the given question is option (2) a decrease in activation energy and an increase in the reaction rate
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Astrophysics and planetar Astrophysics and planetary science are considered subspecialties of Astronomy. Astronomy is the study of the sun, moon, planets, stars, comets, gas, galaxies, dust and other bodies and phenomena.
Note
Astrophysics - properties of space
Planetary Science - planet formation
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(2) an indicator (4) thermal energy
The size of the container needed to hold the gas is 1.03 L
The volume of the container needed can obtained by using the ideal gas equation as illustrated below:
PV = nRT
Divide both side by P
V = nRT / p
V = (0.0459 × 0.0821 × 273) / 1
V = 1.03 L
Therefore, the size of the container needed is 1.03 L.
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Answer:
The size of the container needed is 1,03 liters
Explanation:
We use the formula PV=nRT. The STP conditions correspond to 1 atm of pressure and 273 K of temperature.
PV=nRT V=(nRT)/P
V= (0,0459 mol x 0,082 l atm/ K mol x 273K)/1 atm= 1,0275174 liters
Answer:
Buffers.
Explanation:
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When the body experiences acidic conditions, buffers such as phosphates in form of sodium-based phosphates and bicarbonates are produced by itself in order to stabilize the inner pH. Such buffers are majorly produced in the blood.
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To neutralize acidic conditions, the body produces buffers, such as bicarbonate ions, which combine with hydrogen ions to regulate blood pH, maintaining it at around 7.4 for proper physiological function.
The human body produces substances known as buffers to neutralize acidic conditions and maintain homeostasis. These buffers include a combination of carbonic acid (H₂CO₃), bicarbonate ions (HCO₃⁻), and carbon dioxide (CO₂). When there's a decrease in blood pH, indicating acidity, bicarbonate ions can bind to free hydrogen ions, forming carbonic acid, which can then be converted to CO₂ and exhaled through the lungs, thereby reducing acidity.
If the blood becomes too alkaline, carbonic acid can release hydrogen ions, lowering pH. Furthermore, the kidneys regulate blood pH by excreting excess hydrogen ions and reabsorbing bicarbonate. An example of this regulation is when lactic acid, produced in our muscles during exercise, is neutralized by bicarbonate ions, forming carbonic acid that breaks down into CO₂ and water.
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